body, p, h3 {
  margin: 0;
  padding: 0;
}

body {
  background-color: #f5f5f5;
  font: 12px/1.5 Helvetica Neue,Helvetica,Arial,Microsoft Yahei,Hiragino Sans GB,Heiti SC,WenQuanYi Micro Hei,sans-serif;
}

h3 {
  font-weight: 400;
}

/* a的重置 */
a {
  text-decoration: none;
  color: #333;
  font-size: 12px;
}
